2) If my ASIC is no longer bringing in many coins, or the hashing power is insignificant because of more powerful ASICs and/or the increasing difficulty, then it is a worthless device that will resell for no-where near what I paid for it
3) If my GPU is no longer bringing in many coins, then I can move to another crypto-currency that is more profitable, if that doesn't work then I can move to another one, if that doesn't work then I can sell it for relatively the same amount that I paid for it. People are always upgrading their computers and these cards are all pretty beasty
I'm thinking about buying ASIC miners but also thinking similar to what you said.
If all this bitcoin story stops, ASIC is only good for trash. Same scenario if somebody sell much stronger miners.
On other side, I lost some value of GPUs but I can sell them if I stop mining and with alt-coins there is still some income.
Soon I will probably end up with both, hardware and GPU miners.
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